Maddy, don't worry or give up please. You KNOW you've followed the rules so the weight will come off eventually. I always used to stick or even gain for 5-7 days and then it dropped by a pound or two. there are lots of factors. I am cruising at the moment, and have been weighing every day because I can't leave the scales alone and my weight has zig-zagged up and down at least a pound every day (interestingly up after PP and down after PV). Had I only weighed Saturday and Thursday I would have recorded a loss of 300gr, but now I'm actually down over two pounds (I am fairly active these days so that helps).
Are you keeping active, doing your minimum 30mins walk every day? Drinking enough water? Eating ENOUGH? Anyway - if you can see your body fat down that's a good sign and sometimes we can see losses (measure yourself rather than weigh!) that just don't register on the scales.